you can try kgtp + native gdb 在 2013年10月22日星期二UTC+8下午3时19分08秒，杨杨毅写道： > > Is there any other better way to debug kernel step by step except printk? > > On Friday, October 18, 2013 7:26:56 AM UTC+8, m-ric wrote: >> >> If you can't see any message on the console, enable early printk. >> >> Emeric >> >> Le 17 oct. 2013 à 04:39, 杨杨毅 <[email protected]> a écrit : >> >> > Hi, Arnaud, >> > >> > I'm also trying to debug kernel. But I could not find a easier way to >> bebug it until now. Could you share specific method after you know ? Thanks >> > >> > On Monday, March 18, 2013 10:33:56 PM UTC+8, arnaud gaboury wrote: >> > Hi all, >> > >> > I would like to debug a non booting android kernel for lge mako n4. >> Unfortunately, as the device does not boot, I can't pull any msg or log. >> > >> > I found this article : >> > http://bootloader.wikidot.com/android:kgdb >> > and followed it. >> > >> > Unfortunately, code is quite old and gave me a lot of errors at build >> time after I applied the changes. Some small rework let me with one only >> issue: >> > >> > ERROR: modpost: Found 2 section mismatch(es). >> > To see full details build your kernel with: >> > 'make CONFIG_DEBUG_SECTION_MISMATCH=y' >> > GEN .version >> > CHK include/generated/compile.h >> > UPD include/generated/compile.h >> > CC init/version.o >> > LD init/built-in.o >> > LD .tmp_vmlinux1 >> > drivers/built-in.o: In function `__gs_poll_put_char': >> > kernel/lge/mako/drivers/usb/gadget/u_serial.c:1506: undefined reference >> to `usb_loop_poll_hw' >> > drivers/built-in.o: In function `__gs_poll_get_char': >> > /kernel/lge/mako/drivers/usb/gadget/u_serial.c:1461: undefined >> reference to `usb_loop_poll_hw' >> > make: *** [.tmp_vmlinux1] Error 1 >> > >> > I am not a C dev and do not know how to deal with it. Please find >> attached my /gadget/u_serial.c file. I made some changes to other files too >> : >> > >> > >> https://bitbucket.org/rhg135/gingerkernel/commits/476cd6c80286#chg-drivers/usb/gadget/msm72k_udc.c >> >> > >> https://bitbucket.org/rhg135/gingerkernel/commits/12c6d96a6a2b#chg-arch/arm/mach-msm/include/mach/msm_hsusb.h >> >> > >> https://bitbucket.org/rhg135/gingerkernel/commits/b73e26b254e9#chg-drivers/usb/gadget/u_serial.c >> >> > >> > Thank you for any help. Maybe there is a easier way to debug Kernel, >> but I couldn't find any clear entry. >> > >> > Regards. >> > >> > >> > >> > >> > -- >> > -- >> > unsubscribe: [email protected] >> > website: http://groups.google.com/group/android-kernel >> > --- >> > You received this message because you are subscribed to the Google >> Groups "Android Linux Kernel Development" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> an email to [email protected]. >> > For more options, visit https://groups.google.com/groups/opt_out. >> >>
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